PS. A 310 m3/hr max blast on a Xiaomi 2S is sufficient to clean the air in the room and after 15 mins you can throttle back to 120 m3/hr or so, no issue even for external AQI of 200. Have done that before, no issue.

But for internal pollutants like dust mite droppings (esp when you toss and churn) and indoor aircon FCU black mold source with the windows closed, not really the same hor.
And at just extremely minute levels you could trigger the allergy. And unfortunately for dust mite droppings (size ranges from around 2 to 10 microns for the smallest droppings, relatively big stuff), if the filter does not capture it, then you are gonna breathe it in. But still, it's going to help to a good extent.

Aircon FCU black mold travels through the air before you breathing it in. An AP or multiple APs with high airflow ACH would help.

120-150 m3/hr airflow in lower speed settings is ok. You might need to learn to do some speed/period programming, coz the auto mode is useless, only kicks into higher fan speed at way over PSI 100 levels. iirc is over 75 ug/m3 detected by the internal laser particle counter then kick in faster fan speed. Else is useless.

Now if the touch screen also goes, then bye bye. These are not buttons like on Sharp APs or what, which are of coz considered to be old fashion.

For me, just on/off, fan speed, dim the front panel LEDs, can liao. No need ioniser, add humidity, internets control.....coz i have more than enough horsepower to clean the air from say 200 ug/m3 to decent levels below 50 ug/m3 within 3-4 minutes.

Main thing is must be a workhorse. My Sharp KC-840 11 years old liao. And i'm just using those $4 a piece China HEPA.

Main thing is must be a workhorse. My Sharp KC-840 11 years old liao. And i'm just using those $4 a piece China HEPA.

All China H11 HEPA (measured to be 92%), except for the Mfresh M8088A which is true H12 HEPA (it's 99% thereabouts).

3 APs in the room. Mfresh M8088A actually is in lowest fan speed, coz i don't wanna load it too much. Most of the cleaning is done by the Samsung AX40 and Sharp KC-840 with China DIY HEPA, cut in size + sides stuffed with bubble wrap for sealing.

Now if the touch screen also goes, then bye bye. These are not buttons like on Sharp APs or what, which are of coz considered to be old fashion.

For me, just on/off, fan speed, dim the front panel LEDs, can liao. No need ioniser, add humidity, internets control.....coz i have more than enough horsepower to clean the air from say 200 ug/m3 to decent levels below 50 ug/m3 within 3-4 minutes.

Main thing is must be a workhorse. My Sharp KC-840 11 years old liao. And i'm just using those $4 a piece China HEPA.

Thanks, I did not consider such potential issues. The PRO has manual button...

If you want to reduce smell or VOCs, a very surface issue, i think for the average room size in Pasir Ris to Punggol, about 200m3/hr ought to be able to do it.
If you are looking at emergency prepping against disasters over at our neighbours, best to do like 400-500 m3/hr.

Yes, 颗粒物 means filtration of mold, dust, pet dander, and also dust mite and dust mite droppings....if they manage to float around due to strong airflow in the room ( eg powerful aircon drafts).

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